Everyday Science Mcqs » Everyday Science MCQs
Which of the following statements is incorrect about halogens ?

A. All are non-metals
B. All the halogens have electronic conviguration ns2p5
C. They have high electron attinity and ionization energy
D. All the halogens react with noble gases to form their halides

Bleaching powder is not used for bleaching________________?

A. Cotton
B. Costly fabrics
C. Linen
D. Paper pulb

Which of the following is not use of compounds of Fluorine________________?

A. Sbf3 is used for manufacture of pottery
B. Sodium fluoroacetate is a rat posion
C. Cu f2 is used in ceramic industry
D. None of the above

Indicate the correct statement__________________?

A. Cl2 is the strongest oxidizing agent
B. I2 is a volatile solid
C. Br2 is more reactive than cl2
D. Cl2 is insoluble in water

Which is the paramagnetic oxide of chlorine ?

A. Cl2o7
B. Cl2o6
C. Clo2
D. All

Consider the following reaction- 3Cl2 + 6NaOH ? NaClO3 + 5NaCl + 3H2O This reaction is_______________?

A. Displacement reaction
B. Double displacement reaction
C. Disproportionation reaction
D. Reduction reaction

Which of the halogen can displace other three elements ?

A. Flourine
B. Chlorine
C. Iodine
D. Bromine